CN220554455U

CN220554455U - Screw for juicer and juicer

Info

Publication number: CN220554455U
Application number: CN202190000724.XU
Authority: CN
Inventors: 姜炳浩; 郑性河
Original assignee: Hurom Co Ltd
Current assignee: Hurom Co Ltd
Priority date: 2020-07-10
Filing date: 2021-07-07
Publication date: 2024-03-05
Anticipated expiration: 2031-07-07
Also published as: KR20220002840U; KR20220000173U; US20230284835A1; KR200496948Y1; WO2022010270A1

Abstract

A screw for a juice extractor according to an embodiment of the present utility model has a plurality of screw threads formed on an outer circumferential surface thereof, the screw being characterized in that the screw is composed of a cut-in portion for receiving an input juice extracting material and pressing the juice extracting material for the first time through the plurality of screw threads, and a compression portion for further pressing and pulverizing the juice extracting material fed from the cut-in portion, the compression portion being formed with a rough surface region thereon.

Description

Screw for juicer and juicer

Technical Field

The utility model relates to a screw for a juicer and a juicer. More particularly, the present utility model relates to a screw for a juicer and a juicer, which surface-treat the screw for the juicer to reduce frictional noise.

Background

Recently, as health concerns are increasing, the frequency of use of juicers that can directly drink from vegetables, grains, or fruits is increasing.

The general operation of this juicer is the same as that disclosed in korean patent No. 0793852, and the juice is gently extracted from the input material by using the principle of stone mill beans.

The juice extractor includes: a driving part for providing a rotational force; a screw for pressing or pulverizing the juice-pressing object; a net barrel for separating juice and residue crushed by the screw; and a juice extracting barrel, the inner side of which is provided with the screw and the net barrel.

The screw is rotated by receiving a rotational force from the driving unit, and presses or crushes the juice to be introduced into the juice extractor. That is, the juice extracting object put into the juice extracting barrel is pushed into a narrow gap between the screw and the net barrel by the screw thread formed on the side surface of the screw, and is conveyed to the lower side.

However, according to these prior art techniques, since the screw has a smooth surface, periodic noise is generated when the material is rubbed against the screw at high pressure in the press section between the screw and the barrel during the juice extraction process, and such periodic noise is overlapped with each other to generate continuous resonance sound.

Disclosure of Invention

Technical problem

In order to solve the above-described problems, the present utility model is directed to provide a screw for a juicer and a juicer, which can reduce the generation of resonance sounds by forming a rough surface on all or part of the screw surface so that the material is irregularly rubbed against the screw surface during juicing.

Technical proposal

According to one embodiment of the present utility model, a screw for a juicer includes a plurality of screw threads formed on an outer circumferential surface thereof, and is characterized in that the screw includes a cut-in portion for receiving an input juicing material and pressing the juicing material for a first time by the plurality of screw threads, and a compression portion for further pressing and crushing the juicing material fed from the cut-in portion, and the compression portion has a roughened area with a roughened surface formed thereon.

The screw is characterized in that the roughened region may be formed by a plurality of concave grooves between the plurality of screw flights.

The screw is characterized in that the roughened area may be formed by a corrosion treatment or a sandpaper treatment.

The screw may be characterized in that the roughened region may be provided on a plurality of sections spaced apart from each other along the circumference of the surface of the screw.

The screw is characterized in that the plurality of grooves can be regularly arranged along the direction formed by extending the threads of the plurality of screws.

The screw is characterized in that the plurality of grooves may be arranged in 1 row in a direction in which the plurality of screw flights extend.

The screw may be characterized in that the plurality of grooves may be arranged in 2 rows at a portion where the plurality of screw flights are formed in a curved shape from the lower side of the compression portion toward the lower side.

The screw may be characterized in that the plurality of grooves may be irregularly arranged between the plurality of screw flights.

The screw may be characterized in that the compression portion is formed integrally with the compression portion at a lower portion of the cut-in portion.

The screw may be characterized in that the pitch of the plurality of screw flights provided in the compression portion may be closer than the pitch of the plurality of screw flights provided in the cutting portion.

The screw may be characterized in that the top surfaces of the screw flights are formed obliquely downward in the circumferential direction of the screw.

The screw may be characterized in that a plurality of screw flights provided in the compression portion may be formed in a curved shape from a lower side of the compression portion toward a lower side.

The screw may be characterized in that a plurality of residue guide protrusions protruding radially outward of the compression part may be formed on a bottom surface of the compression part in a circumferential direction of the compression part.

In another aspect, a juice extractor according to an embodiment of the present utility model is characterized in that it includes: the screw; a cover with an opening on the top surface, a residue discharge outlet formed on one side of the lower end, and a driving part formed inside; and a barrel disposed between the screw and the housing and forming a gap with the screw so as to pass juice after juice extraction, wherein the screw is disposed inside the housing, receives a rotational force from the driving part and rotates, and extracts and pulverizes juice extraction material put into the housing by interaction with the barrel.

A juice extractor according to an embodiment of the present utility model may further comprise: and a brush disposed between the housing and the tub and rotated for scraping a side surface of the tub or the housing.

Advantageous effects

According to the embodiment of the utility model, the screw for the juicer can reduce noise caused by resonance phenomenon by forming a rough surface on all or part of the surface so that the material is irregularly rubbed against the surface of the screw when juicing.

Drawings

Fig. 1 is a partial sectional view of a juice extractor provided with a screw according to an embodiment of the present utility model.

Fig. 2 is an elevation view of a screw according to one embodiment of the utility model.

Fig. 3 is a perspective view of a screw according to one embodiment of the present utility model.

Fig. 4 is an elevation view of a screw according to another embodiment of the present utility model.

Fig. 5 is an elevation view of a screw according to yet another embodiment of the present utility model.

Fig. 6 is a bar graph showing the noise detection result of each frequency band before the screw according to one embodiment of the present utility model is applied.

Fig. 7 is a bar graph showing the noise detection result of each frequency band after the screw according to one embodiment of the present utility model is applied.

Fig. 8 is a graph showing noise detection results according to time when a screw according to an embodiment of the present utility model is applied and a conventional screw is applied.

Fig. 9 is a graph showing the effect of improved noise detection results when a screw according to one embodiment of the present utility model is applied, compared to when a conventional screw is applied.

Detailed Description

Hereinafter, preferred embodiments of the present utility model are described in detail below based on the drawings.

Throughout the specification, when a portion is described as "comprising" a certain component, it is intended that other components may be included, unless specifically stated to the contrary, not excluded. For convenience of description, directions toward the ground (lower side in the drawing) are denoted by "lower side", "bottom surface", "lower end", and the like, and directions away from the ground (upper side in the drawing) are denoted by "upper side", "top surface", "upper end", and the like. In addition, throughout the specification, portions denoted by the same reference numerals refer to the same or similar components. In addition, the contents exceeding the gist of the present utility model are simply described or omitted in the drawings, and the related description is simply described or omitted.

Fig. 1 is a partial sectional view of a juice extractor provided with a screw according to an embodiment of the present utility model. The juice extractor shown in fig. 1 is one embodiment, and the technical idea of the present utility model is not limited to the juice extractor illustrated in the present specification, and can be applied to various juice extractors.

Referring to fig. 1 to 3, a juice extractor 1 according to an embodiment of the present utility model includes a crushing portion 2, a juice extracting portion 3 disposed at a lower portion of the crushing portion 2, and a driving portion 4 disposed at a lower portion of the juice extracting portion 3.

The crushing section 2 accommodates a raw material to be juice-extracted and crushes the raw material, and the crushed raw material enters the juice extracting section 3 to extract juice. The pulverizing section 2 includes a material container 5 into which raw material is put through a lid 6 provided at a top opening of the material container 5. The lid 6 may be provided with a feed port 22, and raw materials may be fed through the feed port 22.

The material container 5 has a crushing blade (blade) 8 at the center of the bottom surface thereof, and is connected to a screw shaft 55 provided in the juice extracting section 3, and the crushing blade 8 rotates together with the rotation of the screw shaft 55, whereby the material is crushed by the crushing blade 8. The crushed raw material is fed into the juice extracting section 3 at the lower portion of the material container 5 through a crushed material feeding port 24 formed at the bottom surface of the material container 5.

The juice extracting part 3 includes a housing 10, a tub 20, a brush 40, and a screw 100.

The housing 10 is formed in a body shape with an open top surface, and a juice discharge port (not shown) and a residue discharge port 13 may be formed at a lower end portion thereof.

Barrel 20 is disposed between housing 10 and screw 100. The tub 20 and the screw 100 form a narrow gap, and juice is squeezed by pressing a juice squeezing object (crushed material) through the narrow gap as the screw 100 rotates.

The tub 20 may be formed with a plurality of mesh holes on a side surface thereof so that juice generated by the pressing of the screw 100 is discharged to the outside. The residue of the tub 20 cannot be pushed to the lower portion through the above-mentioned mesh and then discharged through the residue discharge port 13, and the juice passing through the mesh can be discharged through the juice discharge port.

In order to use the juice extractor 1 only for crushing, a crushing tub 20 having no mesh on the side of the tub 20 may be formed. In this case, the juice-extracting object pressed and crushed by the tub 20 and the screw 100 is not separated into juice and residue, and is discharged from the juice discharge port or the residue discharge port 13. The pulverizing barrel 20 can be used by mixing frozen fruit, chocolate, water ice, ice cubes, beverage, etc. to prepare ice cream, smoothie, sherbet (sherbet), etc.

The brush 40 may be disposed between the housing 10 and the tub 20, and rotated by receiving a rotational force from the driving part 4. The brush 40 scrapes the side of the tub 20 or the housing 10 so that juice adsorbed on the tub 20 or the housing 10 is smoothly transferred to the lower portion.

When the user desires to clean the inside of the housing 10, the brush 40 may be activated after the cleaning liquid or water is introduced into the housing 10. At this time, the brush 40 can thoroughly remove juice or residue attached to the tub 20 or the housing 10.

Fig. 2 is a front view of a screw according to one embodiment of the present utility model, and fig. 3 is a perspective view of the screw according to one embodiment of the present utility model. Hereinafter, the screw 100 will be described in further detail with reference to fig. 2 and 3.

The screw 100 of the juice extracting section 3 is rotated by receiving the rotational force from the driving section 4, and presses or pulverizes the pulverized material. For this purpose, the screw 100 has a screw shaft 55 rotated in engagement with the driving part 4 at a central portion thereof, and a plurality of screw flights 200 are formed on a portion of the outer peripheral surface of the screw 100 contacting the barrel 20. The crushed material is pushed into the narrow gap between the screw 100 and the barrel 20 by the screw flight 200 and conveyed to the lower side.

The screw 100 according to one embodiment of the present utility model may be roughly divided into a cut-in portion 110 and a compression portion 120.

The cut-in portion 110 is formed adjacent to the crushed material input port 24 into which crushed material is input, and generally the pitch between the screw flights 200 is wider to receive more crushed material. The crushed material entering the cut portion 110 is pressed downward by the screw flight 200.

The compressing unit 120 is configured to further squeeze juice from the crushed material pushed from the cutting unit 110. For this reason, the screw flights 200 formed on the compression portion 120 are more closely spaced. The screw thread 200 formed in the compression portion 120 is formed in a shape curved downward from the lower side, so that the residue is smoothly discharged from the upper portion to the lower portion of the compression portion 120.

Further, a plurality of residue guide protrusions 195 protruding radially outward are formed on the bottom surface of the compression portion 120 in the circumferential direction. The residue guide projection 195 functions to rotate together with the rotation of the screw 100 to brush the residue, which is not pushed to the lower portion through the mesh of the tub 20, at the compressing part 120 to the lower side. In this manner, the residue guide protrusion 195 formed on the bottom surface of the compressing part 120 thoroughly removes residues caught between the lower part of the compressing part 120 and the tub 20, thereby further improving the juice extracting efficiency.

On the other hand, according to one embodiment of the present utility model, the screw thread 200 formed on the screw 100 includes a first thread 210, a second thread 220, a third thread 230, a fourth thread 240, a fifth thread 250, a sixth thread 260, a seventh thread 270, and an eighth thread 280. The number of the above-mentioned threads is set to 8, but is not limited thereto.

The eighth thread 280 is located at the uppermost portion of the screw 100, and may be formed to be coplanar with the uppermost portion of the first thread 210. The eighth screw thread 280 is formed to be shorter than the uppermost portion of the first screw thread 210 so that crushed material of the juice extracting portion 3 inputted through the crushed material input port 24 can naturally flow down from the upper portion of the screw 100.

On the other hand, a plurality of grooves (embossments or dents) 310 are formed in a concave circular shape on the surface of the screw 100 between the threads of the compression part 120. The plurality of grooves 310 may be formed between each thread in a regular arrangement along the thread extension direction. The plurality of grooves 310 have a diameter and depth that can be variously changed according to the diameter of the screw 100 and the pitch of the plurality of screw flights.

A plurality of grooves 310 may be arranged in a row between each thread. In addition, in the portion formed in a curved shape downward from the lower side of the screw, the pitch between the screw is wide, and thus the plurality of grooves 310 may be formed to be arranged in 2 columns in the screw extending direction. By forming such grooves 310, the material and the screw 100 are irregularly rubbed at high pressure in the press section between the screw 100 and the tub 20 during the juice extraction, so that resonance sounds caused by overlapping of periodic noises can be reduced.

As shown in fig. 4, a plurality of grooves 320 may be formed in an irregular arrangement on the surface of the screw 130 between the threads of the compression part 120. In this case, the irregularly arranged plurality of grooves 320 may be formed to have a diameter and depth smaller than those of the irregularly arranged plurality of grooves 310 according to one embodiment shown in fig. 3. In addition, the diameter and depth of the plurality of grooves 320 may be variously changed according to the diameter of the screw 130 and the pitch of the plurality of screw flights 200. That is, the diameters and depths of the plurality of grooves 320 may be formed to be the same as or different from each other.

Referring to fig. 5, a roughened screw surface may be formed at a specific section 330 of the compression section 120 of the screw 140 by an etching process or a sandpaper process. Since the conventional screw has a smooth surface, the juicing material regularly rubs continuously between the screw surface and the tub, resulting in strong noise. As shown in fig. 5, by forming a rough surface at a specific section 330 of the compression portion of the screw 140, the smooth surface is prevented from being continuously rubbed while the screw 140 is rotated, so that noise can be reduced. Such sections 330 formed by the etching process or the sandpaper process may also form a plurality of sections along the circumference of the surface of the screw 140.

Fig. 6 is a bar graph showing the result of noise detection of each frequency band before the screw according to one embodiment of the present utility model is applied, and fig. 7 is a bar graph showing the result of noise detection of each frequency band after the screw according to one embodiment of the present utility model is applied.

Referring to fig. 6 and 7, there are shown the detection results of the maximum noise generated when noise is generated during the juice extracting operation by operating the juice extractor 1 after putting the cut apples into the juice extractor. When apple juice is extracted using a juicer employing a conventional screw, a maximum noise of about 70.8dB is generated in the frequency band of about 500Hz and about 800 Hz. However, when apple juice is extracted using the juice extractor 1 to which the screw 100 according to one embodiment of the present utility model is applied, a maximum noise of about 57.4dB is generated in the frequency bands of about 500Hz and about 800 Hz. From this, it was confirmed that the maximum noise was significantly reduced when the juicer 1 to which the screw 100 of the present utility model was applied was used.

Fig. 8 is a graph showing noise detection results according to time when a screw according to an embodiment of the present utility model is applied and a conventional screw is applied, and fig. 9 is a graph showing the effect of noise detection results improved when a screw according to an embodiment of the present utility model is applied compared to when a conventional screw is applied.

Referring to fig. 8 and 9, there is shown the noise detection result according to time when the juicer 1 is operated after apples and carrots are put into the juicer, the noise detected in the 60Hz band is between about 50dB and about 70 dB. As shown in fig. 8, the degree of noise is reduced when the screw 100 according to one embodiment of the present utility model is applied, compared to noise generated in a juicer when a conventional screw is applied.

In addition, when the conventional screw is applied, the maximum value of the noise is measured to be about 71.8dB, the minimum value is about 57.0dB, and the average value is about 65.6dB, and when the screw 100 according to one embodiment of the present utility model is applied, the maximum value of the noise is measured to be about 69.0dB, the minimum value is about 50.2dB, and the average value is about 59.9dB. It was confirmed that the maximum value of noise was reduced by about 2.8dB, the minimum value was reduced by about 6.8dB, and the average value was reduced by about 5.7dB when the screw 100 according to one embodiment of the present utility model was applied, as compared to the conventional screw.

As described above, according to the embodiment of the present utility model, the screw for a juicer can reduce noise caused by the occurrence of resonance phenomenon by forming a rough surface on all or part of the surface so that the material is irregularly rubbed against the screw surface when juicing.

The preferred embodiments of the present utility model have been described hereinabove, but the present utility model is not limited to the above-described embodiments, and those skilled in the art to which the present utility model pertains will readily modify and consider all modifications within the scope of the utility model as equivalent thereto.

Industrial applicability

Claims

1. A screw for a juicer, having a plurality of screw threads formed on an outer peripheral surface thereof, characterized in that,

the screw is composed of a cutting part for receiving input juice extracting material and pressing the juice extracting material for the first time through the screw threads, and a compression part for further pressing and crushing the juice extracting material conveyed by the cutting part,

the compressed portion is formed with a roughened area having a roughened surface.

2. A screw for a juice extractor according to claim 1, wherein,

the roughened region is formed by a plurality of concave-shaped grooves between the plurality of screw flights.

3. A screw for a juice extractor according to claim 1, wherein,

the roughened region is formed by etching treatment or sand paper treatment.

4. A screw for a juice extractor according to claim 2, wherein,

the roughened region is disposed on a plurality of sections spaced apart from one another along a circumference of a surface of the screw.

5. A screw for a juice extractor according to claim 2, wherein,

the grooves are regularly arranged along the direction formed by extending the screw threads.

6. A screw for a juice extractor according to claim 2, wherein,

the plurality of grooves are arranged in 1 row along a direction in which the plurality of screw flights extend.

7. A screw for a juice extractor according to claim 2, wherein,

the plurality of grooves are arranged in 2 rows on a portion where the plurality of screw flights are formed in a curved shape from the lower side of the compression portion downward.

8. A screw for a juice extractor according to claim 2, wherein,

the plurality of grooves are irregularly arranged between the plurality of screw flights.

9. A screw for a juice extractor according to claim 2, wherein,

the compression portion is formed integrally with the compression portion at a lower portion of the cut-in portion.

10. A screw for a juice extractor according to claim 2, wherein,

the pitch of the plurality of screw flights provided in the compression portion is closer than the pitch of the plurality of screw flights provided in the cutting portion.

11. A screw for a juice extractor according to claim 2, wherein,

the top surfaces of the screw flights are formed obliquely downward in the circumferential direction of the screw.

12. The screw for a juicer of claim 11, wherein,

the plurality of screw flights provided in the compression portion are formed in a curved shape from the lower side of the compression portion toward the lower side.

13. A screw for a juice extractor according to claim 2, wherein,

a plurality of residue guide protrusions protruding outward in the radius of the compression part are formed on the bottom surface of the compression part along the circumferential direction of the compression part.

14. A juice extractor is characterized in that,

the juicer includes:

the screw of any one of claims 1 to 13;

a cover with an opening on the top surface, a residue discharge outlet formed on one side of the lower end, and a driving part formed inside; and

a tub disposed between the screw and the housing and forming a gap with the screw to pass juice after juice extraction,

the screw is provided inside the housing, receives a rotational force from the driving part, rotates, and presses and pulverizes juice extracting material put into the housing by interaction with the tub.

15. The juicer of claim 14, wherein,

the juice extractor further includes:

and a brush disposed between the housing and the tub and rotated for scraping a side surface of the tub or the housing.